forked from mirrors/gotosocial
80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package dereferencing
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/url"
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"strings"
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apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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func (d *deref) fingerRemoteAccount(ctx context.Context, username string, targetUsername string, targetHost string) (accountDomain string, accountURI *url.URL, err error) {
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t, err := d.transportController.NewTransportForUsername(ctx, username)
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if err != nil {
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err = fmt.Errorf("fingerRemoteAccount: error getting transport for %s: %s", username, err)
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return
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}
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b, err := t.Finger(ctx, targetUsername, targetHost)
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if err != nil {
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err = fmt.Errorf("fingerRemoteAccount: error fingering @%s@%s: %s", targetUsername, targetHost, err)
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return
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}
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resp := &apimodel.WellKnownResponse{}
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if err = json.Unmarshal(b, resp); err != nil {
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err = fmt.Errorf("fingerRemoteAccount: could not unmarshal server response as WebfingerAccountResponse while dereferencing @%s@%s: %s", targetUsername, targetHost, err)
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return
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}
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if len(resp.Links) == 0 {
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err = fmt.Errorf("fingerRemoteAccount: no links found in webfinger response %s", string(b))
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return
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}
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if resp.Subject == "" {
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err = fmt.Errorf("fingerRemoteAccount: no subject found in webfinger response %s", string(b))
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return
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}
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_, accountDomain, err = util.ExtractWebfingerParts(resp.Subject)
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if err != nil {
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err = fmt.Errorf("fingerRemoteAccount: error extracting webfinger subject parts: %s", err)
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}
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// look through the links for the first one that matches what we need
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for _, l := range resp.Links {
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if l.Rel == "self" && (strings.EqualFold(l.Type, "application/activity+json") || strings.EqualFold(l.Type, "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"")) {
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if uri, thiserr := url.Parse(l.Href); thiserr == nil && (uri.Scheme == "http" || uri.Scheme == "https") {
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// found it!
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accountURI = uri
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return
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}
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}
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}
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err = errors.New("fingerRemoteAccount: no match found in webfinger response")
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return
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}
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